Non-Brownian Particle-Based Materials with Microscale and Nanoscale Hierarchy

Colloidal crystals are interesting materials owing to their customizable photonic properties, high surface area, and analogy to chemical structures. The flexibility of these materials has been greatly enhanced through mixing particles with varying sizes, compositions, and surface charges. In this wa...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2015-05, Vol.54 (20), p.5854-5858
Main Authors: Lash, Melissa H., Jordan, Jahnelle C., Blevins, Laura C., Fedorchak, Morgan V., Little, Steven R., McCarthy, Joseph J.
Format: Article
Language:English
Subjects:
Analogies
Atoms & subatomic particles
colloidal crystals
Colloids
Crystal structure
Customizing
Hierarchies
microparticles
multicomponent crystals
Nanostructure
nanostructures
Photonics
self-assembly
Stoichiometry
Tuning
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Summary:Colloidal crystals are interesting materials owing to their customizable photonic properties, high surface area, and analogy to chemical structures. The flexibility of these materials has been greatly enhanced through mixing particles with varying sizes, compositions, and surface charges. In this way, distinctive patterns or analogies to chemical stoichiometries are produced; however, to date, this body of research is limited to particles with nanoscale dimensions. A simple method is now presented for bottom‐up assembly of non‐Brownian particle mixtures to create a new class of hierarchically‐ordered materials that mimic those found in nature (both in pore distribution as well as stoichiometry). Additionally, these crystals serve as a template to create particle‐based inverted crystalline structures with customizable properties. Non‐Brownian microparticle mixtures are assembled into unique multicomponent colloidal crystals and their inverse structures. By mimicking the effects of Brownian motion through agitation and tuning of the particle sizes and volume ratios, unique stoichiometric patterns are created and can serve as an analogue to autonomously formed nanostructures.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201500273